CVE-2026-27141

Due to missing nil check, sending 0x0a-0x0f HTTP/2 frames will cause a running server to panic

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/746180
https://go.dev/issue/77652
https://nvd.nist.gov/vuln/detail/CVE-2026-27141
https://pkg.go.dev/vuln/GO-2026-4559

Configurations

No configuration.

History

No history.

Information

Published : 2026-02-26 20:31

Updated : 2026-06-17 10:26

NVD link : CVE-2026-27141

Mitre link : CVE-2026-27141

CVE.ORG link : CVE-2026-27141

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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"affected", "version": "0.50.0", "lessThan": "0.51.0", "versionType": "semver"}], "packageName": "golang.org/x/net/http2", "collectionURL": "https://pkg.go.dev", "defaultStatus": "unaffected", "programRoutines": [{"name": "typeFrameParser"}, {"name": "ClientConn.Close"}, {"name": "ClientConn.Ping"}, {"name": "ClientConn.RoundTrip"}, {"name": "ClientConn.Shutdown"}, {"name": "ConfigureServer"}, {"name": "ConfigureTransport"}, {"name": "ConfigureTransports"}, {"name": "ConnectionError.Error"}, {"name": "ErrCode.String"}, {"name": "FrameHeader.String"}, {"name": "FrameType.String"}, {"name": "FrameWriteRequest.String"}, {"name": "Framer.ReadFrame"}, {"name": "Framer.ReadFrameForHeader"}, {"name": "Framer.ReadFrameHeader"}, {"name": "Framer.WriteContinuation"}, {"name": "Framer.WriteData"}, {"name": "Framer.WriteDataPadded"}, {"name": "Framer.WriteGoAway"}, {"name": "Framer.WriteHeaders"}, {"name": "Framer.WritePing"}, {"name": "Framer.WritePriority"}, {"name": "Framer.WritePriorityUpdate"}, {"name": "Framer.WritePushPromise"}, {"name": "Framer.WriteRSTStream"}, {"name": "Framer.WriteRawFrame"}, {"name": "Framer.WriteSettings"}, {"name": "Framer.WriteSettingsAck"}, {"name": "Framer.WriteWindowUpdate"}, {"name": "GoAwayError.Error"}, {"name": "ReadFrameHeader"}, {"name": "Server.ServeConn"}, {"name": "Setting.String"}, {"name": "SettingID.String"}, {"name": "SettingsFrame.ForeachSetting"}, {"name": "StreamError.Error"}, {"name": "Transport.CloseIdleConnections"}, {"name": "Transport.NewClientConn"}, {"name": "Transport.RoundTrip"}, {"name": "Transport.RoundTripOpt"}, {"name": "bufferedWriter.Flush"}, {"name": "bufferedWriter.Write"}, {"name": "bufferedWriterTimeoutWriter.Write"}, {"name": "chunkWriter.Write"}, {"name": "clientConnPool.GetClientConn"}, {"name": "connError.Error"}, {"name": "dataBuffer.Read"}, {"name": "duplicatePseudoHeaderError.Error"}, {"name": "gzipReader.Close"}, {"name": "gzipReader.Read"}, {"name": "headerFieldNameError.Error"}, {"name": "headerFieldValueError.Error"}, {"name": "netHTTPClientConn.Close"}, {"name": "netHTTPClientConn.RoundTrip"}, {"name": "noDialClientConnPool.GetClientConn"}, {"name": "noDialH2RoundTripper.NewClientConn"}, {"name": "noDialH2RoundTripper.RoundTrip"}, {"name": "pipe.Read"}, {"name": "priorityWriteSchedulerRFC7540.CloseStream"}, {"name": "priorityWriteSchedulerRFC7540.OpenStream"}, {"name": "priorityWriteSchedulerRFC9218.OpenStream"}, {"name": "pseudoHeaderError.Error"}, {"name": "requestBody.Close"}, {"name": "requestBody.Read"}, {"name": "responseWriter.Flush"}, {"name": "responseWriter.FlushError"}, {"name": "responseWriter.Push"}, {"name": "responseWriter.SetReadDeadline"}, {"name": "responseWriter.SetWriteDeadline"}, {"name": "responseWriter.Write"}, {"name": "responseWriter.WriteHeader"}, {"name": "responseWriter.WriteString"}, {"name": "roundRobinWriteScheduler.OpenStream"}, {"name": "serverConn.CloseConn"}, {"name": "serverConn.Flush"}, {"name": "stickyErrWriter.Write"}, {"name": "transportResponseBody.Close"}, {"name": "transportResponseBody.Read"}, {"name": "unencryptedTransport.RoundTrip"}, {"name": "writeData.String"}]}]}], "published": "2026-02-26T20:31:38.017", "references": [{"url": "https://go.dev/cl/746180", "source": "security@golang.org"}, {"url": "https://go.dev/issue/77652", "source": "security@golang.org"}, {"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27141", "source": "security@golang.org"}, {"url": "https://pkg.go.dev/vuln/GO-2026-4559", "source": "security@golang.org"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "Due to missing nil check, sending 0x0a-0x0f HTTP/2 frames will cause a running server to panic"}, {"lang": "es", "value": "Debido a la falta de una comprobaci\u00f3n de nulo, el env\u00edo de tramas HTTP/2 0x0a-0x0f causar\u00e1 que un servidor en ejecuci\u00f3n colapse."}], "lastModified": "2026-06-17T10:26:44.520", "sourceIdentifier": "security@golang.org"}